It is unsafe, unsupported, illegal for production, and likely contains malware.

The reference to "Oct 2013" typically alludes to specific release channels (such as the Microsoft Volume Licensing Service Center or specific MSDN refreshes) or popular "integrated" ISO images circulating at that time.

: "Preactivated" ISOs from unofficial sources often contain integrated Trojans, viruses, or spyware designed to steal sensitive data or create botnets .

Despite the risks, there are scenarios where this specific build is genuinely “better” than anything newer: